Questioned: Gabriel Aubry, seen here with daughter Nahla, was quizzed by child services today over claims he pushed his her nanny

Halle Berry's ex-partner Gabriel Aubry has been formally questioned by child protections services over allegations he pushed their daughter's former nanny.

The male model was quizzed by The Los Angeles County Department of Children and Family Services over the claim that he shoved Alliance Kamden while she was holding three-year-old Nahla.

RadarOnline reported that Aubry, 36, was questioned by social workers and a source close to the Canadian said the interview was thorough and exhaustive.

Speaking to the website, the source said: 'These are very serious allegations and
Gabriel was obviously very nervous. Gabriel feels that he is living in a police state as
far as his time with his daughter is concerned.

'He is a doting and loving father and
extremely attentive to Nahla. His daughter wasn't present when the
interview took place. The investigation will remain open at this point,
but it's not uncommon at all for officials to keep an investigation open
out of an abundance of caution to ensure the safety of the child.'

The questioning comes after Alliance Kamden claimed that she went to pick up the little girl from school and when she found she wasn't there, she went to call on Aubry.

A source told Radar that she got into an arguement with Aubry because she was not told that Nahla was not at school, and the model verbally abused her before pushing her.

Routine: Police were seen at Halle Berry's house a few days ago to quiz her over the allegations made against her ex Aubry

Fight: Halle was snapped on her way to court earlier this week with her lawyer to ask a judge for full custody of Nahla until the investigation is resolved

The source said: 'She picked up Nahla to leave and
Gabriel yelled at her and shoved her out the door so hard that she hit
the wall -- while she had Nahla in her arms.'

Alliance Kamden filed a police report and Aubry is now being investigated for misdemeanor battery and child endangerment but Aubry insists that she tripped and he would not push her, especially while she was holding his daughter.

Halle, 45, was also questioned this week over the allegations even though she did not witness the argument.

Stepdaddy: Halle is now with French actor Olivier Martinez who she is engaged to

A source said: 'She has a very strong narrative about what the nanny had told her had
been occurring over the past several months.

'Halle wanted law enforcement to have all relevant information. There is absolutely no love lost between Halle and Gabriel.'

Halle and Gabriel are due in court
next Monday where the actress is expected to ask a judge to strip the
model of shared custody to Nahla until the investigation is complete.

No love lost: Halle and Aubry, seen here in 2009, dated for five years and had daughter Nahla